Felix, that yacht is an Adams-Radford 12 metre, not an Adams 40.
A very nice yacht but like pumpnjump says, be wary of a 25 year old foam core boat.
One thing about living on board is that it tends to keep you fit and nimble with all the up and down laddering and constant motion of the yacht.
I highly recommend setting up a means of having hot showers on board. It is very easy and a device such as this does the job admirably.
Re internet:- Hangtime has Telstra 4g I think and seems to get very good coverage.